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Processability, morphology, thermal, and mechanical properties of rigid PVC composites with liquid macromolecular modifier‐coated CaCO 3
Author(s) -
Liu Hai,
Wang Jie,
Wen Sheng,
Gong Chunli,
Zheng Genwen,
Xiong Chuanxi,
Gao Lin
Publication year - 2015
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.23033
Subject(s) - materials science , composite material , vinyl chloride , plasticizer , scanning electron microscope , dispersion (optics) , rheometer , izod impact strength test , polyvinyl chloride , polymer , rheology , copolymer , ultimate tensile strength , physics , optics
Rigid poly(vinyl chloride) (PVC)/CaCO 3 and PVC/liquid macromolecular modifier (LMM) coated CaCO 3 (PVC/LCC) composites were both fabricated by melt mixing. The processability, micro‐structure, dynamic mechanical behavior and mechanical properties of PVC/CaCO 3 and PVC/LCC composites were studied by using torque rheometer, scanning electron microscope (SEM), dynamic mechanical analysis (DMA), and universal mechanical testing machine. The results showed that the synergistic effect of LMM and CaCO 3 particles accelerated the plasticization of PVC resins. The processability of PVC/LCC composites was improved. The dispersion of LCC in PVC matrix was improved by the modification of CaCO 3 particles with LMM. The T gs of PVC/LCC composites were enhanced by filling with LCC. Because of the synergistic toughening of LMM and CaCO 3 particles, the PVC/LCC composites exhibited excellent notched impact properties at the optimum value of LCC particles content. POLYM. COMPOS., 36:1286–1292, 2015. © 2014 Society of Plastics Engineers